S32205不锈钢弯管在气固两相流下的冲蚀模拟研究  

Erosion Simulation Study of S32205 Stainless Steel Elbow under Gas-Solid Twophase Flow

作　　者：李良均[1] 刘书文[2] 程文钦 蔡从德 李科[2] 王明春[2] LI Liangjun;LIU Shuwen;CHENG Wenqin;CAI Congde;LI Ke;WANG Mingchun(Sichuan Kehong Petroleum&Natural Gas Engineering Co.,Ltd.;Southwest Petroleum University;Changning Shale Gas Branch Company of Southwest Oil&Gas Field Company,CNPC)

机构地区：[1]四川科宏石油天然气工程有限公司办公室 [2]四川科宏石油天然气工程有限公司 [3]西南石油大学 [4]中国石油西南油气田公司长宁页岩气公司

出　　处：《油气田地面工程》2022年第11期18-24,共7页Oil-Gas Field Surface Engineering

基　　金：南充市市校合作项目(SWJBGS004)。

摘　　要：页岩气开发时,其高压气流携带颗粒对传输管线弯头的冲蚀给页岩气的安全集输带来严重威胁。为了页岩气管道安全,使用CFD-DPM模型,选取砂配比、流速及压力等因素进行正交实验,研究了S32205双相不锈钢材质的90°弯管在气固两相流环境中的冲蚀情况,分析了弯头部分的流场变化。结果表明:S32205不锈钢的最大冲蚀率为5.30×10^(-3) mm/a,最小冲蚀率为3.87×10^(-4) mm/a;在多项参数中,流速对弯管的冲蚀影响较大,砂配比次之,压力对弯管的冲蚀影响最小;流场分析结果可知,气流在弯头外侧压力较高、流速较低,在弯头内侧流速较高、压力较低。During the development of shale gas,the erosion of the elbows of the transmission pipeline by the particles carried by the high-pressure gas flow poses a serious threat to the gathering and transportation of shale gas.In order to ensure the safety of shale gas pipeline,a CFD-DPM model is used to study the erosion of 90°elbow of S32205 stainless steel in gas-solid two-phase flow environment by orthogonal experiments with selecting sand ratio,flow velocity and pressure,and the flow field changes in the elbow is analyzed.The results show that the maximum erosion rate of S32205 stainless steel is 5.30×10^(-3) mm/a,and the minimum erosion rate is 3.87×10^(-4) mm/a.Among the multiple parameters,the flow velocity has the greatest influence on the erosion of the elbow,followed by the sand ratio,and pressure has the least effect on the erosion of the elbow.The flow field analysis results show that the gas flow velocity is low with high pressure on the outside of the elbow,while the gas flow velocity is high with low pressure on the inside of the elbow.

关 键 词：页岩气集输管道 气固两相流 S32205不锈钢 CFD-DPM模型 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]